Specifications

Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
86
Changing the Maximum-Idle Interval
If a switch does not hear BPDUs from the root switch within a specified interval, it recomputes the
spanning-tree topology.
Follow the steps below to change the maximum-idle interval (maximum aging time).
SUMMARY STEPS
1. enable
2. configure terminal
3. bridge bridge-group max-age seconds
4. end
5. show running-config
6. copy running-config startup-config
DETAILED STEPS
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
bridge bridge-group max-age seconds
Example:
Router(config-if)# bridge 100
forward-time 25
Specifies the interval the switch waits to hear BPDUs from the root
switch.
• For bridge-group, specify the bridge group number. The range is 1
to 255.
• For seconds, enter a number from 10 to 200. The default is 30
seconds.
Step 4
end
Example:
Router(config-if)# end
Returns to privileged EXEC mode.
Step 5
show running-config
Example:
Router: show running-config
Verifies your entry.
Step 6
copy running-config startup-config
Example:
Router# copy running-config
startup-config
(Optional) Saves your entry in the configuration file.